Home / 287,510.19-431,328.75-87,846.18

Finding the Fourth Proportional to 287,510.19, 431,328.75 and 87,846.18

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Solution

The fourth proportional to 287,510.19, 431,328.75 and 87,846.18 is: 131,788.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,510.19 : 431,328.75 = 87,846.18 : x
  2. Step 2: Convert to fraction form
    287,510.19/431,328.75 = 87,846.18/x
  3. Step 3: Cross multiply
    287,510.19x = 431,328.75 × 87,846.18
  4. Step 4: Simplify right side
    287,510.19x = 37,890,583,011.68
  5. Step 5: Solve for x
    x = 37,890,583,011.68/287,510.19
  6. Step 6: Final answer
    x = 131,788.66

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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.