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Finding the Fourth Proportional to 287,048.70, 396,130.77 and 158,002.07

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Solution

The fourth proportional to 287,048.70, 396,130.77 and 158,002.07 is: 218,044.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,048.70 : 396,130.77 = 158,002.07 : x
  2. Step 2: Convert to fraction form
    287,048.70/396,130.77 = 158,002.07/x
  3. Step 3: Cross multiply
    287,048.70x = 396,130.77 × 158,002.07
  4. Step 4: Simplify right side
    287,048.70x = 62,589,479,670.04
  5. Step 5: Solve for x
    x = 62,589,479,670.04/287,048.70
  6. Step 6: Final answer
    x = 218,044.81

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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.