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Finding the Fourth Proportional to 292,812.40, 439,240.20 and 105,799.60

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Solution

The fourth proportional to 292,812.40, 439,240.20 and 105,799.60 is: 158,707.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,812.40 : 439,240.20 = 105,799.60 : x
  2. Step 2: Convert to fraction form
    292,812.40/439,240.20 = 105,799.60/x
  3. Step 3: Cross multiply
    292,812.40x = 439,240.20 × 105,799.60
  4. Step 4: Simplify right side
    292,812.40x = 46,471,437,463.92
  5. Step 5: Solve for x
    x = 46,471,437,463.92/292,812.40
  6. Step 6: Final answer
    x = 158,707.20

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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.