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Finding the Fourth Proportional to 288,830.40, 433,180.80 and 189,686.40

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Solution

The fourth proportional to 288,830.40, 433,180.80 and 189,686.40 is: 284,487.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,830.40 : 433,180.80 = 189,686.40 : x
  2. Step 2: Convert to fraction form
    288,830.40/433,180.80 = 189,686.40/x
  3. Step 3: Cross multiply
    288,830.40x = 433,180.80 × 189,686.40
  4. Step 4: Simplify right side
    288,830.40x = 82,168,506,501.12
  5. Step 5: Solve for x
    x = 82,168,506,501.12/288,830.40
  6. Step 6: Final answer
    x = 284,487.04

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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.