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Finding the Fourth Proportional to 555,083.04, 765,999.16 and 310,061.28

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Solution

The fourth proportional to 555,083.04, 765,999.16 and 310,061.28 is: 427,875.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,083.04 : 765,999.16 = 310,061.28 : x
  2. Step 2: Convert to fraction form
    555,083.04/765,999.16 = 310,061.28/x
  3. Step 3: Cross multiply
    555,083.04x = 765,999.16 × 310,061.28
  4. Step 4: Simplify right side
    555,083.04x = 237,506,680,028.53
  5. Step 5: Solve for x
    x = 237,506,680,028.53/555,083.04
  6. Step 6: Final answer
    x = 427,875.94

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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.