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Finding the Fourth Proportional to 371,422.08, 513,026.28 and 286,413.39

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Solution

The fourth proportional to 371,422.08, 513,026.28 and 286,413.39 is: 395,608.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,422.08 : 513,026.28 = 286,413.39 : x
  2. Step 2: Convert to fraction form
    371,422.08/513,026.28 = 286,413.39/x
  3. Step 3: Cross multiply
    371,422.08x = 513,026.28 × 286,413.39
  4. Step 4: Simplify right side
    371,422.08x = 146,937,596,013.89
  5. Step 5: Solve for x
    x = 146,937,596,013.89/371,422.08
  6. Step 6: Final answer
    x = 395,608.13

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1.5x scale

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.