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Finding the Fourth Proportional to 357,425.76, 536,142.80 and 91,185.76

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Solution

The fourth proportional to 357,425.76, 536,142.80 and 91,185.76 is: 136,779.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,425.76 : 536,142.80 = 91,185.76 : x
  2. Step 2: Convert to fraction form
    357,425.76/536,142.80 = 91,185.76/x
  3. Step 3: Cross multiply
    357,425.76x = 536,142.80 × 91,185.76
  4. Step 4: Simplify right side
    357,425.76x = 48,888,588,686.53
  5. Step 5: Solve for x
    x = 48,888,588,686.53/357,425.76
  6. Step 6: Final answer
    x = 136,779.70

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1.5x scale

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.