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Finding the Fourth Proportional to 308,049.60, 461,728.80 and 130,526.40

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Solution

The fourth proportional to 308,049.60, 461,728.80 and 130,526.40 is: 195,643.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,049.60 : 461,728.80 = 130,526.40 : x
  2. Step 2: Convert to fraction form
    308,049.60/461,728.80 = 130,526.40/x
  3. Step 3: Cross multiply
    308,049.60x = 461,728.80 × 130,526.40
  4. Step 4: Simplify right side
    308,049.60x = 60,267,798,040.32
  5. Step 5: Solve for x
    x = 60,267,798,040.32/308,049.60
  6. Step 6: Final answer
    x = 195,643.16

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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.