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Finding the Fourth Proportional to 287,944, 397,363.08 and 160,627.72

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Solution

The fourth proportional to 287,944, 397,363.08 and 160,627.72 is: 221,666.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,944 : 397,363.08 = 160,627.72 : x
  2. Step 2: Convert to fraction form
    287,944/397,363.08 = 160,627.72/x
  3. Step 3: Cross multiply
    287,944x = 397,363.08 × 160,627.72
  4. Step 4: Simplify right side
    287,944x = 63,827,525,552.58
  5. Step 5: Solve for x
    x = 63,827,525,552.58/287,944
  6. Step 6: Final answer
    x = 221,666.45

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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.