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Finding the Fourth Proportional to 248,547.13, 342,973.97 and 139,642.94

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Solution

The fourth proportional to 248,547.13, 342,973.97 and 139,642.94 is: 192,695.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,547.13 : 342,973.97 = 139,642.94 : x
  2. Step 2: Convert to fraction form
    248,547.13/342,973.97 = 139,642.94/x
  3. Step 3: Cross multiply
    248,547.13x = 342,973.97 × 139,642.94
  4. Step 4: Simplify right side
    248,547.13x = 47,893,893,514.27
  5. Step 5: Solve for x
    x = 47,893,893,514.27/248,547.13
  6. Step 6: Final answer
    x = 192,695.42

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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.