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Finding the Fourth Proportional to 402,905.80, 604,358.70 and 166,169.80

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Solution

The fourth proportional to 402,905.80, 604,358.70 and 166,169.80 is: 249,254.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,905.80 : 604,358.70 = 166,169.80 : x
  2. Step 2: Convert to fraction form
    402,905.80/604,358.70 = 166,169.80/x
  3. Step 3: Cross multiply
    402,905.80x = 604,358.70 × 166,169.80
  4. Step 4: Simplify right side
    402,905.80x = 100,426,164,307.26
  5. Step 5: Solve for x
    x = 100,426,164,307.26/402,905.80
  6. Step 6: Final answer
    x = 249,254.70

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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.