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Finding the Fourth Proportional to 615,312.51, 849,129.57 and 343,377.51

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Solution

The fourth proportional to 615,312.51, 849,129.57 and 343,377.51 is: 473,860.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,312.51 : 849,129.57 = 343,377.51 : x
  2. Step 2: Convert to fraction form
    615,312.51/849,129.57 = 343,377.51/x
  3. Step 3: Cross multiply
    615,312.51x = 849,129.57 × 343,377.51
  4. Step 4: Simplify right side
    615,312.51x = 291,571,997,413.97
  5. Step 5: Solve for x
    x = 291,571,997,413.97/615,312.51
  6. Step 6: Final answer
    x = 473,860.02

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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.