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Finding the Fourth Proportional to 347,615.47, 479,461.52 and 319,027.28

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Solution

The fourth proportional to 347,615.47, 479,461.52 and 319,027.28 is: 440,030.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,615.47 : 479,461.52 = 319,027.28 : x
  2. Step 2: Convert to fraction form
    347,615.47/479,461.52 = 319,027.28/x
  3. Step 3: Cross multiply
    347,615.47x = 479,461.52 × 319,027.28
  4. Step 4: Simplify right side
    347,615.47x = 152,961,304,590.27
  5. Step 5: Solve for x
    x = 152,961,304,590.27/347,615.47
  6. Step 6: Final answer
    x = 440,030.21

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1.5x scale

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.