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Finding the Fourth Proportional to 389,775.60, 584,663.40 and 168,159.60

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Solution

The fourth proportional to 389,775.60, 584,663.40 and 168,159.60 is: 252,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,775.60 : 584,663.40 = 168,159.60 : x
  2. Step 2: Convert to fraction form
    389,775.60/584,663.40 = 168,159.60/x
  3. Step 3: Cross multiply
    389,775.60x = 584,663.40 × 168,159.60
  4. Step 4: Simplify right side
    389,775.60x = 98,316,763,478.64
  5. Step 5: Solve for x
    x = 98,316,763,478.64/389,775.60
  6. Step 6: Final answer
    x = 252,239.40

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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.