Home / 278,868,287.40-418,302,431.10-125,813,279.40

Finding the Fourth Proportional to 278,868,287.40, 418,302,431.10 and 125,813,279.40

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Solution

The fourth proportional to 278,868,287.40, 418,302,431.10 and 125,813,279.40 is: 188,719,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,868,287.40 : 418,302,431.10 = 125,813,279.40 : x
  2. Step 2: Convert to fraction form
    278,868,287.40/418,302,431.10 = 125,813,279.40/x
  3. Step 3: Cross multiply
    278,868,287.40x = 418,302,431.10 × 125,813,279.40
  4. Step 4: Simplify right side
    278,868,287.40x = 52,628,000,637,683,552
  5. Step 5: Solve for x
    x = 52,628,000,637,683,552/278,868,287.40
  6. Step 6: Final answer
    x = 188,719,919.10

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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.