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Finding the Fourth Proportional to 575,438.20, 863,157.30 and 148,973.20

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Solution

The fourth proportional to 575,438.20, 863,157.30 and 148,973.20 is: 223,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,438.20 : 863,157.30 = 148,973.20 : x
  2. Step 2: Convert to fraction form
    575,438.20/863,157.30 = 148,973.20/x
  3. Step 3: Cross multiply
    575,438.20x = 863,157.30 × 148,973.20
  4. Step 4: Simplify right side
    575,438.20x = 128,587,305,084.36
  5. Step 5: Solve for x
    x = 128,587,305,084.36/575,438.20
  6. Step 6: Final answer
    x = 223,459.80

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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.