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Finding the Fourth Proportional to 535,282.80, 738,689.13 and 308,928.30

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Solution

The fourth proportional to 535,282.80, 738,689.13 and 308,928.30 is: 426,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,282.80 : 738,689.13 = 308,928.30 : x
  2. Step 2: Convert to fraction form
    535,282.80/738,689.13 = 308,928.30/x
  3. Step 3: Cross multiply
    535,282.80x = 738,689.13 × 308,928.30
  4. Step 4: Simplify right side
    535,282.80x = 228,201,977,159.38
  5. Step 5: Solve for x
    x = 228,201,977,159.38/535,282.80
  6. Step 6: Final answer
    x = 426,320.40

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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.