Home / 280,084,309.80-386,516,882.40-154,636,748.40

Finding the Fourth Proportional to 280,084,309.80, 386,516,882.40 and 154,636,748.40

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Solution

The fourth proportional to 280,084,309.80, 386,516,882.40 and 154,636,748.40 is: 213,399,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,084,309.80 : 386,516,882.40 = 154,636,748.40 : x
  2. Step 2: Convert to fraction form
    280,084,309.80/386,516,882.40 = 154,636,748.40/x
  3. Step 3: Cross multiply
    280,084,309.80x = 386,516,882.40 × 154,636,748.40
  4. Step 4: Simplify right side
    280,084,309.80x = 59,769,713,896,041,184
  5. Step 5: Solve for x
    x = 59,769,713,896,041,184/280,084,309.80
  6. Step 6: Final answer
    x = 213,399,008.10

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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.