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Finding the Fourth Proportional to 540,429.20, 810,643.80 and 146,445.20

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Solution

The fourth proportional to 540,429.20, 810,643.80 and 146,445.20 is: 219,667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,429.20 : 810,643.80 = 146,445.20 : x
  2. Step 2: Convert to fraction form
    540,429.20/810,643.80 = 146,445.20/x
  3. Step 3: Cross multiply
    540,429.20x = 810,643.80 × 146,445.20
  4. Step 4: Simplify right side
    540,429.20x = 118,714,893,419.76
  5. Step 5: Solve for x
    x = 118,714,893,419.76/540,429.20
  6. Step 6: Final answer
    x = 219,667.80

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Similar ratio
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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.