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Finding the Fourth Proportional to 287,701.88, 397,028.59 and 160,385.67

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Solution

The fourth proportional to 287,701.88, 397,028.59 and 160,385.67 is: 221,332.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,701.88 : 397,028.59 = 160,385.67 : x
  2. Step 2: Convert to fraction form
    287,701.88/397,028.59 = 160,385.67/x
  3. Step 3: Cross multiply
    287,701.88x = 397,028.59 × 160,385.67
  4. Step 4: Simplify right side
    287,701.88x = 63,677,696,015.34
  5. Step 5: Solve for x
    x = 63,677,696,015.34/287,701.88
  6. Step 6: Final answer
    x = 221,332.22

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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.