Home / 287,742.20-431,030.10-162,937.40

Finding the Fourth Proportional to 287,742.20, 431,030.10 and 162,937.40

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Solution

The fourth proportional to 287,742.20, 431,030.10 and 162,937.40 is: 244,075.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,742.20 : 431,030.10 = 162,937.40 : x
  2. Step 2: Convert to fraction form
    287,742.20/431,030.10 = 162,937.40/x
  3. Step 3: Cross multiply
    287,742.20x = 431,030.10 × 162,937.40
  4. Step 4: Simplify right side
    287,742.20x = 70,230,923,815.74
  5. Step 5: Solve for x
    x = 70,230,923,815.74/287,742.20
  6. Step 6: Final answer
    x = 244,075.86

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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.