Home / 315,023,412.20-472,393,400.70-120,870,300.20

Finding the Fourth Proportional to 315,023,412.20, 472,393,400.70 and 120,870,300.20

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Solution

The fourth proportional to 315,023,412.20, 472,393,400.70 and 120,870,300.20 is: 181,251,075.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,023,412.20 : 472,393,400.70 = 120,870,300.20 : x
  2. Step 2: Convert to fraction form
    315,023,412.20/472,393,400.70 = 120,870,300.20/x
  3. Step 3: Cross multiply
    315,023,412.20x = 472,393,400.70 × 120,870,300.20
  4. Step 4: Simplify right side
    315,023,412.20x = 57,098,332,155,107,888
  5. Step 5: Solve for x
    x = 57,098,332,155,107,888/315,023,412.20
  6. Step 6: Final answer
    x = 181,251,075.14

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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.