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Finding the Fourth Proportional to 406,688.50, 609,609.66 and 136,616.28

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Solution

The fourth proportional to 406,688.50, 609,609.66 and 136,616.28 is: 204,782.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,688.50 : 609,609.66 = 136,616.28 : x
  2. Step 2: Convert to fraction form
    406,688.50/609,609.66 = 136,616.28/x
  3. Step 3: Cross multiply
    406,688.50x = 609,609.66 × 136,616.28
  4. Step 4: Simplify right side
    406,688.50x = 83,282,604,001.26
  5. Step 5: Solve for x
    x = 83,282,604,001.26/406,688.50
  6. Step 6: Final answer
    x = 204,782.29

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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.