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Finding the Fourth Proportional to 212,497.77, 317,191.98 and 187,275.87

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Solution

The fourth proportional to 212,497.77, 317,191.98 and 187,275.87 is: 279,543.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,497.77 : 317,191.98 = 187,275.87 : x
  2. Step 2: Convert to fraction form
    212,497.77/317,191.98 = 187,275.87/x
  3. Step 3: Cross multiply
    212,497.77x = 317,191.98 × 187,275.87
  4. Step 4: Simplify right side
    212,497.77x = 59,402,404,011.52
  5. Step 5: Solve for x
    x = 59,402,404,011.52/212,497.77
  6. Step 6: Final answer
    x = 279,543.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.