Home / 287,821.40-397,184.46-156,994.16

Finding the Fourth Proportional to 287,821.40, 397,184.46 and 156,994.16

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Solution

The fourth proportional to 287,821.40, 397,184.46 and 156,994.16 is: 216,646.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,821.40 : 397,184.46 = 156,994.16 : x
  2. Step 2: Convert to fraction form
    287,821.40/397,184.46 = 156,994.16/x
  3. Step 3: Cross multiply
    287,821.40x = 397,184.46 × 156,994.16
  4. Step 4: Simplify right side
    287,821.40x = 62,355,640,662.75
  5. Step 5: Solve for x
    x = 62,355,640,662.75/287,821.40
  6. Step 6: Final answer
    x = 216,646.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.