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Finding the Fourth Proportional to 424,073.51, 636,134.09 and 135,910.23

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Solution

The fourth proportional to 424,073.51, 636,134.09 and 135,910.23 is: 203,872.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,073.51 : 636,134.09 = 135,910.23 : x
  2. Step 2: Convert to fraction form
    424,073.51/636,134.09 = 135,910.23/x
  3. Step 3: Cross multiply
    424,073.51x = 636,134.09 × 135,910.23
  4. Step 4: Simplify right side
    424,073.51x = 86,457,130,482.74
  5. Step 5: Solve for x
    x = 86,457,130,482.74/424,073.51
  6. Step 6: Final answer
    x = 203,872.98

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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.