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Finding the Fourth Proportional to 565,203.61, 779,971.98 and 310,549.33

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Solution

The fourth proportional to 565,203.61, 779,971.98 and 310,549.33 is: 428,553.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,203.61 : 779,971.98 = 310,549.33 : x
  2. Step 2: Convert to fraction form
    565,203.61/779,971.98 = 310,549.33/x
  3. Step 3: Cross multiply
    565,203.61x = 779,971.98 × 310,549.33
  4. Step 4: Simplify right side
    565,203.61x = 242,219,775,807.77
  5. Step 5: Solve for x
    x = 242,219,775,807.77/565,203.61
  6. Step 6: Final answer
    x = 428,553.13

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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.