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Finding the Fourth Proportional to 501,210.18, 691,641.18 and 274,855.68

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Solution

The fourth proportional to 501,210.18, 691,641.18 and 274,855.68 is: 379,285.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,210.18 : 691,641.18 = 274,855.68 : x
  2. Step 2: Convert to fraction form
    501,210.18/691,641.18 = 274,855.68/x
  3. Step 3: Cross multiply
    501,210.18x = 691,641.18 × 274,855.68
  4. Step 4: Simplify right side
    501,210.18x = 190,101,506,844.90
  5. Step 5: Solve for x
    x = 190,101,506,844.90/501,210.18
  6. Step 6: Final answer
    x = 379,285.01

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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.