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Finding the Fourth Proportional to 288,317.20, 432,475.80 and 188,784.40

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Solution

The fourth proportional to 288,317.20, 432,475.80 and 188,784.40 is: 283,176.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,317.20 : 432,475.80 = 188,784.40 : x
  2. Step 2: Convert to fraction form
    288,317.20/432,475.80 = 188,784.40/x
  3. Step 3: Cross multiply
    288,317.20x = 432,475.80 × 188,784.40
  4. Step 4: Simplify right side
    288,317.20x = 81,644,684,417.52
  5. Step 5: Solve for x
    x = 81,644,684,417.52/288,317.20
  6. Step 6: Final answer
    x = 283,176.60

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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.