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Finding the Fourth Proportional to 287,818.76, 397,192.48 and 158,762.20

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Solution

The fourth proportional to 287,818.76, 397,192.48 and 158,762.20 is: 219,093.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,818.76 : 397,192.48 = 158,762.20 : x
  2. Step 2: Convert to fraction form
    287,818.76/397,192.48 = 158,762.20/x
  3. Step 3: Cross multiply
    287,818.76x = 397,192.48 × 158,762.20
  4. Step 4: Simplify right side
    287,818.76x = 63,059,151,948.26
  5. Step 5: Solve for x
    x = 63,059,151,948.26/287,818.76
  6. Step 6: Final answer
    x = 219,093.27

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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.