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Finding the Fourth Proportional to 238,988.96, 358,483.44 and 72,778.40

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Solution

The fourth proportional to 238,988.96, 358,483.44 and 72,778.40 is: 109,167.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,988.96 : 358,483.44 = 72,778.40 : x
  2. Step 2: Convert to fraction form
    238,988.96/358,483.44 = 72,778.40/x
  3. Step 3: Cross multiply
    238,988.96x = 358,483.44 × 72,778.40
  4. Step 4: Simplify right side
    238,988.96x = 26,089,851,189.70
  5. Step 5: Solve for x
    x = 26,089,851,189.70/238,988.96
  6. Step 6: Final answer
    x = 109,167.60

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1.5x scale

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.