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Finding the Fourth Proportional to 357,079.68, 535,622.66 and 90,840.47

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Solution

The fourth proportional to 357,079.68, 535,622.66 and 90,840.47 is: 136,261.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,079.68 : 535,622.66 = 90,840.47 : x
  2. Step 2: Convert to fraction form
    357,079.68/535,622.66 = 90,840.47/x
  3. Step 3: Cross multiply
    357,079.68x = 535,622.66 × 90,840.47
  4. Step 4: Simplify right side
    357,079.68x = 48,656,211,044.73
  5. Step 5: Solve for x
    x = 48,656,211,044.73/357,079.68
  6. Step 6: Final answer
    x = 136,261.50

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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.