Home / 248,308.16-342,641.52-139,387.55

Finding the Fourth Proportional to 248,308.16, 342,641.52 and 139,387.55

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Solution

The fourth proportional to 248,308.16, 342,641.52 and 139,387.55 is: 192,341.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,308.16 : 342,641.52 = 139,387.55 : x
  2. Step 2: Convert to fraction form
    248,308.16/342,641.52 = 139,387.55/x
  3. Step 3: Cross multiply
    248,308.16x = 342,641.52 × 139,387.55
  4. Step 4: Simplify right side
    248,308.16x = 47,759,960,287.87
  5. Step 5: Solve for x
    x = 47,759,960,287.87/248,308.16
  6. Step 6: Final answer
    x = 192,341.49

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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.