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Finding the Fourth Proportional to 404,720.70, 607,081.05 and 205,655.10

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Solution

The fourth proportional to 404,720.70, 607,081.05 and 205,655.10 is: 308,482.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,720.70 : 607,081.05 = 205,655.10 : x
  2. Step 2: Convert to fraction form
    404,720.70/607,081.05 = 205,655.10/x
  3. Step 3: Cross multiply
    404,720.70x = 607,081.05 × 205,655.10
  4. Step 4: Simplify right side
    404,720.70x = 124,849,314,045.86
  5. Step 5: Solve for x
    x = 124,849,314,045.86/404,720.70
  6. Step 6: Final answer
    x = 308,482.65

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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.