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Finding the Fourth Proportional to 240,865, 361,384.38 and 128,426.92

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Solution

The fourth proportional to 240,865, 361,384.38 and 128,426.92 is: 192,686.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,865 : 361,384.38 = 128,426.92 : x
  2. Step 2: Convert to fraction form
    240,865/361,384.38 = 128,426.92/x
  3. Step 3: Cross multiply
    240,865x = 361,384.38 × 128,426.92
  4. Step 4: Simplify right side
    240,865x = 46,411,482,859.51
  5. Step 5: Solve for x
    x = 46,411,482,859.51/240,865
  6. Step 6: Final answer
    x = 192,686.70

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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.