Home / 315,023,012.70-472,392,801.45-120,869,900.70

Finding the Fourth Proportional to 315,023,012.70, 472,392,801.45 and 120,869,900.70

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Solution

The fourth proportional to 315,023,012.70, 472,392,801.45 and 120,869,900.70 is: 181,250,476.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,023,012.70 : 472,392,801.45 = 120,869,900.70 : x
  2. Step 2: Convert to fraction form
    315,023,012.70/472,392,801.45 = 120,869,900.70/x
  3. Step 3: Cross multiply
    315,023,012.70x = 472,392,801.45 × 120,869,900.70
  4. Step 4: Simplify right side
    315,023,012.70x = 57,098,071,002,656,312
  5. Step 5: Solve for x
    x = 57,098,071,002,656,312/315,023,012.70
  6. Step 6: Final answer
    x = 181,250,476.00

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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.