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Finding the Fourth Proportional to 145,807.20, 218,710.80 and 52,300.80

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Solution

The fourth proportional to 145,807.20, 218,710.80 and 52,300.80 is: 78,451.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,807.20 : 218,710.80 = 52,300.80 : x
  2. Step 2: Convert to fraction form
    145,807.20/218,710.80 = 52,300.80/x
  3. Step 3: Cross multiply
    145,807.20x = 218,710.80 × 52,300.80
  4. Step 4: Simplify right side
    145,807.20x = 11,438,749,808.64
  5. Step 5: Solve for x
    x = 11,438,749,808.64/145,807.20
  6. Step 6: Final answer
    x = 78,451.20

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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.