Home / 421,712,184.80-632,976,324-203,516,128.16

Finding the Fourth Proportional to 421,712,184.80, 632,976,324 and 203,516,128.16

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Solution

The fourth proportional to 421,712,184.80, 632,976,324 and 203,516,128.16 is: 305,471,113.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,712,184.80 : 632,976,324 = 203,516,128.16 : x
  2. Step 2: Convert to fraction form
    421,712,184.80/632,976,324 = 203,516,128.16/x
  3. Step 3: Cross multiply
    421,712,184.80x = 632,976,324 × 203,516,128.16
  4. Step 4: Simplify right side
    421,712,184.80x = 128,820,890,677,429,680
  5. Step 5: Solve for x
    x = 128,820,890,677,429,680/421,712,184.80
  6. Step 6: Final answer
    x = 305,471,113.52

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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.