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Finding the Fourth Proportional to 357,917.47, 536,880.45 and 91,670.87

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Solution

The fourth proportional to 357,917.47, 536,880.45 and 91,670.87 is: 137,507.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,917.47 : 536,880.45 = 91,670.87 : x
  2. Step 2: Convert to fraction form
    357,917.47/536,880.45 = 91,670.87/x
  3. Step 3: Cross multiply
    357,917.47x = 536,880.45 × 91,670.87
  4. Step 4: Simplify right side
    357,917.47x = 49,216,299,623.46
  5. Step 5: Solve for x
    x = 49,216,299,623.46/357,917.47
  6. Step 6: Final answer
    x = 137,507.40

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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.