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Finding the Fourth Proportional to 457,019.54, 630,693.48 and 263,320.40

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Solution

The fourth proportional to 457,019.54, 630,693.48 and 263,320.40 is: 363,385.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,019.54 : 630,693.48 = 263,320.40 : x
  2. Step 2: Convert to fraction form
    457,019.54/630,693.48 = 263,320.40/x
  3. Step 3: Cross multiply
    457,019.54x = 630,693.48 × 263,320.40
  4. Step 4: Simplify right side
    457,019.54x = 166,074,459,430.99
  5. Step 5: Solve for x
    x = 166,074,459,430.99/457,019.54
  6. Step 6: Final answer
    x = 363,385.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.