Home / 287,623.02-431,434.54-87,943.42

Finding the Fourth Proportional to 287,623.02, 431,434.54 and 87,943.42

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Solution

The fourth proportional to 287,623.02, 431,434.54 and 87,943.42 is: 131,915.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,623.02 : 431,434.54 = 87,943.42 : x
  2. Step 2: Convert to fraction form
    287,623.02/431,434.54 = 87,943.42/x
  3. Step 3: Cross multiply
    287,623.02x = 431,434.54 × 87,943.42
  4. Step 4: Simplify right side
    287,623.02x = 37,941,828,953.73
  5. Step 5: Solve for x
    x = 37,941,828,953.73/287,623.02
  6. Step 6: Final answer
    x = 131,915.13

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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.