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Finding the Fourth Proportional to 287,907.54, 397,320.93 and 160,591.62

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Solution

The fourth proportional to 287,907.54, 397,320.93 and 160,591.62 is: 221,621.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,907.54 : 397,320.93 = 160,591.62 : x
  2. Step 2: Convert to fraction form
    287,907.54/397,320.93 = 160,591.62/x
  3. Step 3: Cross multiply
    287,907.54x = 397,320.93 × 160,591.62
  4. Step 4: Simplify right side
    287,907.54x = 63,806,411,808.61
  5. Step 5: Solve for x
    x = 63,806,411,808.61/287,907.54
  6. Step 6: Final answer
    x = 221,621.19

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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.