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Finding the Fourth Proportional to 265,729.60, 398,056.80 and 165,582.40

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Solution

The fourth proportional to 265,729.60, 398,056.80 and 165,582.40 is: 248,038.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,729.60 : 398,056.80 = 165,582.40 : x
  2. Step 2: Convert to fraction form
    265,729.60/398,056.80 = 165,582.40/x
  3. Step 3: Cross multiply
    265,729.60x = 398,056.80 × 165,582.40
  4. Step 4: Simplify right side
    265,729.60x = 65,911,200,280.32
  5. Step 5: Solve for x
    x = 65,911,200,280.32/265,729.60
  6. Step 6: Final answer
    x = 248,038.61

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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.