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Finding the Fourth Proportional to 340,354.71, 469,673.10 and 187,389.72

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Solution

The fourth proportional to 340,354.71, 469,673.10 and 187,389.72 is: 258,588.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,354.71 : 469,673.10 = 187,389.72 : x
  2. Step 2: Convert to fraction form
    340,354.71/469,673.10 = 187,389.72/x
  3. Step 3: Cross multiply
    340,354.71x = 469,673.10 × 187,389.72
  4. Step 4: Simplify right side
    340,354.71x = 88,011,910,700.53
  5. Step 5: Solve for x
    x = 88,011,910,700.53/340,354.71
  6. Step 6: Final answer
    x = 258,588.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.