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Finding the Fourth Proportional to 443,544.13, 612,362.15 and 288,643.02

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Solution

The fourth proportional to 443,544.13, 612,362.15 and 288,643.02 is: 398,503.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,544.13 : 612,362.15 = 288,643.02 : x
  2. Step 2: Convert to fraction form
    443,544.13/612,362.15 = 288,643.02/x
  3. Step 3: Cross multiply
    443,544.13x = 612,362.15 × 288,643.02
  4. Step 4: Simplify right side
    443,544.13x = 176,754,060,309.69
  5. Step 5: Solve for x
    x = 176,754,060,309.69/443,544.13
  6. Step 6: Final answer
    x = 398,503.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.