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Finding the Fourth Proportional to 261,029.20, 391,543.80 and 245,477.20

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Solution

The fourth proportional to 261,029.20, 391,543.80 and 245,477.20 is: 368,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,029.20 : 391,543.80 = 245,477.20 : x
  2. Step 2: Convert to fraction form
    261,029.20/391,543.80 = 245,477.20/x
  3. Step 3: Cross multiply
    261,029.20x = 391,543.80 × 245,477.20
  4. Step 4: Simplify right side
    261,029.20x = 96,115,075,701.36
  5. Step 5: Solve for x
    x = 96,115,075,701.36/261,029.20
  6. Step 6: Final answer
    x = 368,215.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.