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Finding the Fourth Proportional to 259,312.29, 388,746.57 and 99,502.91

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Solution

The fourth proportional to 259,312.29, 388,746.57 and 99,502.91 is: 149,169.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,312.29 : 388,746.57 = 99,502.91 : x
  2. Step 2: Convert to fraction form
    259,312.29/388,746.57 = 99,502.91/x
  3. Step 3: Cross multiply
    259,312.29x = 388,746.57 × 99,502.91
  4. Step 4: Simplify right side
    259,312.29x = 38,681,413,023.79
  5. Step 5: Solve for x
    x = 38,681,413,023.79/259,312.29
  6. Step 6: Final answer
    x = 149,169.23

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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.