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Finding the Fourth Proportional to 286,867.80, 430,301.70 and 160,378.20

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Solution

The fourth proportional to 286,867.80, 430,301.70 and 160,378.20 is: 240,567.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,867.80 : 430,301.70 = 160,378.20 : x
  2. Step 2: Convert to fraction form
    286,867.80/430,301.70 = 160,378.20/x
  3. Step 3: Cross multiply
    286,867.80x = 430,301.70 × 160,378.20
  4. Step 4: Simplify right side
    286,867.80x = 69,011,012,102.94
  5. Step 5: Solve for x
    x = 69,011,012,102.94/286,867.80
  6. Step 6: Final answer
    x = 240,567.30

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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.