Home / 280,141,981.20-420,275,957.40-86,062,352.40

Finding the Fourth Proportional to 280,141,981.20, 420,275,957.40 and 86,062,352.40

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Solution

The fourth proportional to 280,141,981.20, 420,275,957.40 and 86,062,352.40 is: 129,112,878.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,141,981.20 : 420,275,957.40 = 86,062,352.40 : x
  2. Step 2: Convert to fraction form
    280,141,981.20/420,275,957.40 = 86,062,352.40/x
  3. Step 3: Cross multiply
    280,141,981.20x = 420,275,957.40 × 86,062,352.40
  4. Step 4: Simplify right side
    280,141,981.20x = 36,169,937,551,006,192
  5. Step 5: Solve for x
    x = 36,169,937,551,006,192/280,141,981.20
  6. Step 6: Final answer
    x = 129,112,878.39

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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.