Home / 287,621.10-431,431.65-163,205.10

Finding the Fourth Proportional to 287,621.10, 431,431.65 and 163,205.10

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Solution

The fourth proportional to 287,621.10, 431,431.65 and 163,205.10 is: 244,807.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,621.10 : 431,431.65 = 163,205.10 : x
  2. Step 2: Convert to fraction form
    287,621.10/431,431.65 = 163,205.10/x
  3. Step 3: Cross multiply
    287,621.10x = 431,431.65 × 163,205.10
  4. Step 4: Simplify right side
    287,621.10x = 70,411,845,581.42
  5. Step 5: Solve for x
    x = 70,411,845,581.42/287,621.10
  6. Step 6: Final answer
    x = 244,807.65

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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.