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Finding the Fourth Proportional to 221,810.64, 306,113.20 and 125,038.32

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Solution

The fourth proportional to 221,810.64, 306,113.20 and 125,038.32 is: 172,561.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,810.64 : 306,113.20 = 125,038.32 : x
  2. Step 2: Convert to fraction form
    221,810.64/306,113.20 = 125,038.32/x
  3. Step 3: Cross multiply
    221,810.64x = 306,113.20 × 125,038.32
  4. Step 4: Simplify right side
    221,810.64x = 38,275,880,257.82
  5. Step 5: Solve for x
    x = 38,275,880,257.82/221,810.64
  6. Step 6: Final answer
    x = 172,561.06

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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.