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Finding the Fourth Proportional to 229,314.98, 316,483.80 and 138,671.58

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Solution

The fourth proportional to 229,314.98, 316,483.80 and 138,671.58 is: 191,384.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,314.98 : 316,483.80 = 138,671.58 : x
  2. Step 2: Convert to fraction form
    229,314.98/316,483.80 = 138,671.58/x
  3. Step 3: Cross multiply
    229,314.98x = 316,483.80 × 138,671.58
  4. Step 4: Simplify right side
    229,314.98x = 43,887,308,590.40
  5. Step 5: Solve for x
    x = 43,887,308,590.40/229,314.98
  6. Step 6: Final answer
    x = 191,384.39

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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.