Home / 304,724,113.20-420,545,211.36-172,588,615.86

Finding the Fourth Proportional to 304,724,113.20, 420,545,211.36 and 172,588,615.86

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Solution

The fourth proportional to 304,724,113.20, 420,545,211.36 and 172,588,615.86 is: 238,186,978.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,724,113.20 : 420,545,211.36 = 172,588,615.86 : x
  2. Step 2: Convert to fraction form
    304,724,113.20/420,545,211.36 = 172,588,615.86/x
  3. Step 3: Cross multiply
    304,724,113.20x = 420,545,211.36 × 172,588,615.86
  4. Step 4: Simplify right side
    304,724,113.20x = 72,581,315,935,173,552
  5. Step 5: Solve for x
    x = 72,581,315,935,173,552/304,724,113.20
  6. Step 6: Final answer
    x = 238,186,978.95

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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.