Home / 280,559,073.60-387,160,082.91-155,103,284.70

Finding the Fourth Proportional to 280,559,073.60, 387,160,082.91 and 155,103,284.70

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Solution

The fourth proportional to 280,559,073.60, 387,160,082.91 and 155,103,284.70 is: 214,036,209.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,559,073.60 : 387,160,082.91 = 155,103,284.70 : x
  2. Step 2: Convert to fraction form
    280,559,073.60/387,160,082.91 = 155,103,284.70/x
  3. Step 3: Cross multiply
    280,559,073.60x = 387,160,082.91 × 155,103,284.70
  4. Step 4: Simplify right side
    280,559,073.60x = 60,049,800,564,065,336
  5. Step 5: Solve for x
    x = 60,049,800,564,065,336/280,559,073.60
  6. Step 6: Final answer
    x = 214,036,209.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.