Home / 280,039,542.40-420,059,313.60-242,290,806.40

Finding the Fourth Proportional to 280,039,542.40, 420,059,313.60 and 242,290,806.40

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Solution

The fourth proportional to 280,039,542.40, 420,059,313.60 and 242,290,806.40 is: 363,436,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,039,542.40 : 420,059,313.60 = 242,290,806.40 : x
  2. Step 2: Convert to fraction form
    280,039,542.40/420,059,313.60 = 242,290,806.40/x
  3. Step 3: Cross multiply
    280,039,542.40x = 420,059,313.60 × 242,290,806.40
  4. Step 4: Simplify right side
    280,039,542.40x = 101,776,509,827,974,496
  5. Step 5: Solve for x
    x = 101,776,509,827,974,496/280,039,542.40
  6. Step 6: Final answer
    x = 363,436,209.60

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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.