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Finding the Fourth Proportional to 415,365.60, 623,048.40 and 134,911.20

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Solution

The fourth proportional to 415,365.60, 623,048.40 and 134,911.20 is: 202,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,365.60 : 623,048.40 = 134,911.20 : x
  2. Step 2: Convert to fraction form
    415,365.60/623,048.40 = 134,911.20/x
  3. Step 3: Cross multiply
    415,365.60x = 623,048.40 × 134,911.20
  4. Step 4: Simplify right side
    415,365.60x = 84,056,207,302.08
  5. Step 5: Solve for x
    x = 84,056,207,302.08/415,365.60
  6. Step 6: Final answer
    x = 202,366.80

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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.