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Finding the Fourth Proportional to 245,477.70, 368,432.55 and 145,512.90

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Solution

The fourth proportional to 245,477.70, 368,432.55 and 145,512.90 is: 218,397.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,477.70 : 368,432.55 = 145,512.90 : x
  2. Step 2: Convert to fraction form
    245,477.70/368,432.55 = 145,512.90/x
  3. Step 3: Cross multiply
    245,477.70x = 368,432.55 × 145,512.90
  4. Step 4: Simplify right side
    245,477.70x = 53,611,688,804.90
  5. Step 5: Solve for x
    x = 53,611,688,804.90/245,477.70
  6. Step 6: Final answer
    x = 218,397.39

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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.