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Finding the Fourth Proportional to 265,937.60, 398,368.80 and 165,790.40

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Solution

The fourth proportional to 265,937.60, 398,368.80 and 165,790.40 is: 248,350.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,937.60 : 398,368.80 = 165,790.40 : x
  2. Step 2: Convert to fraction form
    265,937.60/398,368.80 = 165,790.40/x
  3. Step 3: Cross multiply
    265,937.60x = 398,368.80 × 165,790.40
  4. Step 4: Simplify right side
    265,937.60x = 66,045,722,699.52
  5. Step 5: Solve for x
    x = 66,045,722,699.52/265,937.60
  6. Step 6: Final answer
    x = 248,350.45

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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.