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Finding the Fourth Proportional to 287,574.41, 431,345.92 and 87,894.73

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Solution

The fourth proportional to 287,574.41, 431,345.92 and 87,894.73 is: 131,837.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,574.41 : 431,345.92 = 87,894.73 : x
  2. Step 2: Convert to fraction form
    287,574.41/431,345.92 = 87,894.73/x
  3. Step 3: Cross multiply
    287,574.41x = 431,345.92 × 87,894.73
  4. Step 4: Simplify right side
    287,574.41x = 37,913,032,206.51
  5. Step 5: Solve for x
    x = 37,913,032,206.51/287,574.41
  6. Step 6: Final answer
    x = 131,837.30

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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.