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Finding the Fourth Proportional to 457,060.16, 630,668.04 and 287,174

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Solution

The fourth proportional to 457,060.16, 630,668.04 and 287,174 is: 396,253.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,060.16 : 630,668.04 = 287,174 : x
  2. Step 2: Convert to fraction form
    457,060.16/630,668.04 = 287,174/x
  3. Step 3: Cross multiply
    457,060.16x = 630,668.04 × 287,174
  4. Step 4: Simplify right side
    457,060.16x = 181,111,463,718.96
  5. Step 5: Solve for x
    x = 181,111,463,718.96/457,060.16
  6. Step 6: Final answer
    x = 396,253.01

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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.