Home / 210,145,488.80-315,218,233.20-129,523,920.80

Finding the Fourth Proportional to 210,145,488.80, 315,218,233.20 and 129,523,920.80

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Solution

The fourth proportional to 210,145,488.80, 315,218,233.20 and 129,523,920.80 is: 194,285,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,145,488.80 : 315,218,233.20 = 129,523,920.80 : x
  2. Step 2: Convert to fraction form
    210,145,488.80/315,218,233.20 = 129,523,920.80/x
  3. Step 3: Cross multiply
    210,145,488.80x = 315,218,233.20 × 129,523,920.80
  4. Step 4: Simplify right side
    210,145,488.80x = 40,828,301,471,712,728
  5. Step 5: Solve for x
    x = 40,828,301,471,712,728/210,145,488.80
  6. Step 6: Final answer
    x = 194,285,881.20

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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.