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Finding the Fourth Proportional to 355,066.47, 532,602.95 and 130,430.79

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Solution

The fourth proportional to 355,066.47, 532,602.95 and 130,430.79 is: 195,647.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,066.47 : 532,602.95 = 130,430.79 : x
  2. Step 2: Convert to fraction form
    355,066.47/532,602.95 = 130,430.79/x
  3. Step 3: Cross multiply
    355,066.47x = 532,602.95 × 130,430.79
  4. Step 4: Simplify right side
    355,066.47x = 69,467,822,872.68
  5. Step 5: Solve for x
    x = 69,467,822,872.68/355,066.47
  6. Step 6: Final answer
    x = 195,647.38

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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.