Home / 287,964,089.49-397,390,437.32-155,805,086.04

Finding the Fourth Proportional to 287,964,089.49, 397,390,437.32 and 155,805,086.04

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Solution

The fourth proportional to 287,964,089.49, 397,390,437.32 and 155,805,086.04 is: 215,011,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,964,089.49 : 397,390,437.32 = 155,805,086.04 : x
  2. Step 2: Convert to fraction form
    287,964,089.49/397,390,437.32 = 155,805,086.04/x
  3. Step 3: Cross multiply
    287,964,089.49x = 397,390,437.32 × 155,805,086.04
  4. Step 4: Simplify right side
    287,964,089.49x = 61,915,451,279,298,592
  5. Step 5: Solve for x
    x = 61,915,451,279,298,592/287,964,089.49
  6. Step 6: Final answer
    x = 215,011,015.40

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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.