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Finding the Fourth Proportional to 292,475.20, 438,712.80 and 265,356.40

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Solution

The fourth proportional to 292,475.20, 438,712.80 and 265,356.40 is: 398,034.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,475.20 : 438,712.80 = 265,356.40 : x
  2. Step 2: Convert to fraction form
    292,475.20/438,712.80 = 265,356.40/x
  3. Step 3: Cross multiply
    292,475.20x = 438,712.80 × 265,356.40
  4. Step 4: Simplify right side
    292,475.20x = 116,415,249,241.92
  5. Step 5: Solve for x
    x = 116,415,249,241.92/292,475.20
  6. Step 6: Final answer
    x = 398,034.60

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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.