Home / 280,039,454.40-420,059,181.60-242,290,718.40

Finding the Fourth Proportional to 280,039,454.40, 420,059,181.60 and 242,290,718.40

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Solution

The fourth proportional to 280,039,454.40, 420,059,181.60 and 242,290,718.40 is: 363,436,077.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,039,454.40 : 420,059,181.60 = 242,290,718.40 : x
  2. Step 2: Convert to fraction form
    280,039,454.40/420,059,181.60 = 242,290,718.40/x
  3. Step 3: Cross multiply
    280,039,454.40x = 420,059,181.60 × 242,290,718.40
  4. Step 4: Simplify right side
    280,039,454.40x = 101,776,440,880,380,064
  5. Step 5: Solve for x
    x = 101,776,440,880,380,064/280,039,454.40
  6. Step 6: Final answer
    x = 363,436,077.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.