Home / 315,023,390.70-472,393,368.45-120,870,278.70

Finding the Fourth Proportional to 315,023,390.70, 472,393,368.45 and 120,870,278.70

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Solution

The fourth proportional to 315,023,390.70, 472,393,368.45 and 120,870,278.70 is: 181,251,042.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,023,390.70 : 472,393,368.45 = 120,870,278.70 : x
  2. Step 2: Convert to fraction form
    315,023,390.70/472,393,368.45 = 120,870,278.70/x
  3. Step 3: Cross multiply
    315,023,390.70x = 472,393,368.45 × 120,870,278.70
  4. Step 4: Simplify right side
    315,023,390.70x = 57,098,318,100,583,288
  5. Step 5: Solve for x
    x = 57,098,318,100,583,288/315,023,390.70
  6. Step 6: Final answer
    x = 181,251,042.89

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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.