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Finding the Fourth Proportional to 425,148.04, 637,758.78 and 109,602.28

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Solution

The fourth proportional to 425,148.04, 637,758.78 and 109,602.28 is: 164,412.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,148.04 : 637,758.78 = 109,602.28 : x
  2. Step 2: Convert to fraction form
    425,148.04/637,758.78 = 109,602.28/x
  3. Step 3: Cross multiply
    425,148.04x = 637,758.78 × 109,602.28
  4. Step 4: Simplify right side
    425,148.04x = 69,899,816,378.02
  5. Step 5: Solve for x
    x = 69,899,816,378.02/425,148.04
  6. Step 6: Final answer
    x = 164,412.89

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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.