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Finding the Fourth Proportional to 288,393.68, 432,590.56 and 188,637.80

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Solution

The fourth proportional to 288,393.68, 432,590.56 and 188,637.80 is: 282,956.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,393.68 : 432,590.56 = 188,637.80 : x
  2. Step 2: Convert to fraction form
    288,393.68/432,590.56 = 188,637.80/x
  3. Step 3: Cross multiply
    288,393.68x = 432,590.56 × 188,637.80
  4. Step 4: Simplify right side
    288,393.68x = 81,602,928,904.62
  5. Step 5: Solve for x
    x = 81,602,928,904.62/288,393.68
  6. Step 6: Final answer
    x = 282,956.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.