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Finding the Fourth Proportional to 514,728.80, 772,611.60 and 248,703.20

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Solution

The fourth proportional to 514,728.80, 772,611.60 and 248,703.20 is: 373,305.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,728.80 : 772,611.60 = 248,703.20 : x
  2. Step 2: Convert to fraction form
    514,728.80/772,611.60 = 248,703.20/x
  3. Step 3: Cross multiply
    514,728.80x = 772,611.60 × 248,703.20
  4. Step 4: Simplify right side
    514,728.80x = 192,150,977,277.12
  5. Step 5: Solve for x
    x = 192,150,977,277.12/514,728.80
  6. Step 6: Final answer
    x = 373,305.28

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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.