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Finding the Fourth Proportional to 287,851.04, 397,234.80 and 158,786.56

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Solution

The fourth proportional to 287,851.04, 397,234.80 and 158,786.56 is: 219,125.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,851.04 : 397,234.80 = 158,786.56 : x
  2. Step 2: Convert to fraction form
    287,851.04/397,234.80 = 158,786.56/x
  3. Step 3: Cross multiply
    287,851.04x = 397,234.80 × 158,786.56
  4. Step 4: Simplify right side
    287,851.04x = 63,075,547,404.29
  5. Step 5: Solve for x
    x = 63,075,547,404.29/287,851.04
  6. Step 6: Final answer
    x = 219,125.65

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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.