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Finding the Fourth Proportional to 395,089.92, 590,460.40 and 288,695.36

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Solution

The fourth proportional to 395,089.92, 590,460.40 and 288,695.36 is: 431,454.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,089.92 : 590,460.40 = 288,695.36 : x
  2. Step 2: Convert to fraction form
    395,089.92/590,460.40 = 288,695.36/x
  3. Step 3: Cross multiply
    395,089.92x = 590,460.40 × 288,695.36
  4. Step 4: Simplify right side
    395,089.92x = 170,463,177,743.74
  5. Step 5: Solve for x
    x = 170,463,177,743.74/395,089.92
  6. Step 6: Final answer
    x = 431,454.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.