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Finding the Fourth Proportional to 207,999.40, 287,038.41 and 112,506.10

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Solution

The fourth proportional to 207,999.40, 287,038.41 and 112,506.10 is: 155,258.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,999.40 : 287,038.41 = 112,506.10 : x
  2. Step 2: Convert to fraction form
    207,999.40/287,038.41 = 112,506.10/x
  3. Step 3: Cross multiply
    207,999.40x = 287,038.41 × 112,506.10
  4. Step 4: Simplify right side
    207,999.40x = 32,293,572,059.30
  5. Step 5: Solve for x
    x = 32,293,572,059.30/207,999.40
  6. Step 6: Final answer
    x = 155,258.01

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1.5x scale

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.