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Finding the Fourth Proportional to 288,695.40, 432,812.70 and 122,346.60

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Solution

The fourth proportional to 288,695.40, 432,812.70 and 122,346.60 is: 183,422.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,695.40 : 432,812.70 = 122,346.60 : x
  2. Step 2: Convert to fraction form
    288,695.40/432,812.70 = 122,346.60/x
  3. Step 3: Cross multiply
    288,695.40x = 432,812.70 × 122,346.60
  4. Step 4: Simplify right side
    288,695.40x = 52,953,162,281.82
  5. Step 5: Solve for x
    x = 52,953,162,281.82/288,695.40
  6. Step 6: Final answer
    x = 183,422.26

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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.