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Finding the Fourth Proportional to 236,461.60, 354,695.52 and 78,690.08

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Solution

The fourth proportional to 236,461.60, 354,695.52 and 78,690.08 is: 118,036.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,461.60 : 354,695.52 = 78,690.08 : x
  2. Step 2: Convert to fraction form
    236,461.60/354,695.52 = 78,690.08/x
  3. Step 3: Cross multiply
    236,461.60x = 354,695.52 × 78,690.08
  4. Step 4: Simplify right side
    236,461.60x = 27,911,018,844.44
  5. Step 5: Solve for x
    x = 27,911,018,844.44/236,461.60
  6. Step 6: Final answer
    x = 118,036.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.