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Finding the Fourth Proportional to 390,915.35, 586,497.50 and 174,740.93

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Solution

The fourth proportional to 390,915.35, 586,497.50 and 174,740.93 is: 262,167.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,915.35 : 586,497.50 = 174,740.93 : x
  2. Step 2: Convert to fraction form
    390,915.35/586,497.50 = 174,740.93/x
  3. Step 3: Cross multiply
    390,915.35x = 586,497.50 × 174,740.93
  4. Step 4: Simplify right side
    390,915.35x = 102,485,117,718.97
  5. Step 5: Solve for x
    x = 102,485,117,718.97/390,915.35
  6. Step 6: Final answer
    x = 262,167.03

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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.