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Finding the Fourth Proportional to 398,468.55, 549,886.81 and 226,386.82

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Solution

The fourth proportional to 398,468.55, 549,886.81 and 226,386.82 is: 312,413.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,468.55 : 549,886.81 = 226,386.82 : x
  2. Step 2: Convert to fraction form
    398,468.55/549,886.81 = 226,386.82/x
  3. Step 3: Cross multiply
    398,468.55x = 549,886.81 × 226,386.82
  4. Step 4: Simplify right side
    398,468.55x = 124,487,126,275.84
  5. Step 5: Solve for x
    x = 124,487,126,275.84/398,468.55
  6. Step 6: Final answer
    x = 312,413.93

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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.