Home / 280,039,424.40-420,059,136.60-242,290,688.40

Finding the Fourth Proportional to 280,039,424.40, 420,059,136.60 and 242,290,688.40

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Solution

The fourth proportional to 280,039,424.40, 420,059,136.60 and 242,290,688.40 is: 363,436,032.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,039,424.40 : 420,059,136.60 = 242,290,688.40 : x
  2. Step 2: Convert to fraction form
    280,039,424.40/420,059,136.60 = 242,290,688.40/x
  3. Step 3: Cross multiply
    280,039,424.40x = 420,059,136.60 × 242,290,688.40
  4. Step 4: Simplify right side
    280,039,424.40x = 101,776,417,375,523,648
  5. Step 5: Solve for x
    x = 101,776,417,375,523,648/280,039,424.40
  6. Step 6: Final answer
    x = 363,436,032.60

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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.