Home / 315,023,386.20-472,393,361.70-120,870,274.20

Finding the Fourth Proportional to 315,023,386.20, 472,393,361.70 and 120,870,274.20

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Solution

The fourth proportional to 315,023,386.20, 472,393,361.70 and 120,870,274.20 is: 181,251,036.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,023,386.20 : 472,393,361.70 = 120,870,274.20 : x
  2. Step 2: Convert to fraction form
    315,023,386.20/472,393,361.70 = 120,870,274.20/x
  3. Step 3: Cross multiply
    315,023,386.20x = 472,393,361.70 × 120,870,274.20
  4. Step 4: Simplify right side
    315,023,386.20x = 57,098,315,158,938,776
  5. Step 5: Solve for x
    x = 57,098,315,158,938,776/315,023,386.20
  6. Step 6: Final answer
    x = 181,251,036.15

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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.