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Finding the Fourth Proportional to 171,931.70, 257,897.55 and 169,307.30

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Solution

The fourth proportional to 171,931.70, 257,897.55 and 169,307.30 is: 253,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,931.70 : 257,897.55 = 169,307.30 : x
  2. Step 2: Convert to fraction form
    171,931.70/257,897.55 = 169,307.30/x
  3. Step 3: Cross multiply
    171,931.70x = 257,897.55 × 169,307.30
  4. Step 4: Simplify right side
    171,931.70x = 43,663,937,867.12
  5. Step 5: Solve for x
    x = 43,663,937,867.12/171,931.70
  6. Step 6: Final answer
    x = 253,960.95

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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.