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Finding the Fourth Proportional to 152,419.60, 228,636.60 and 47,312.20

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Solution

The fourth proportional to 152,419.60, 228,636.60 and 47,312.20 is: 70,970.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,419.60 : 228,636.60 = 47,312.20 : x
  2. Step 2: Convert to fraction form
    152,419.60/228,636.60 = 47,312.20/x
  3. Step 3: Cross multiply
    152,419.60x = 228,636.60 × 47,312.20
  4. Step 4: Simplify right side
    152,419.60x = 10,817,300,546.52
  5. Step 5: Solve for x
    x = 10,817,300,546.52/152,419.60
  6. Step 6: Final answer
    x = 70,970.53

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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.