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Finding the Fourth Proportional to 348,037.40, 522,055.86 and 85,381.40

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Solution

The fourth proportional to 348,037.40, 522,055.86 and 85,381.40 is: 128,072.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,037.40 : 522,055.86 = 85,381.40 : x
  2. Step 2: Convert to fraction form
    348,037.40/522,055.86 = 85,381.40/x
  3. Step 3: Cross multiply
    348,037.40x = 522,055.86 × 85,381.40
  4. Step 4: Simplify right side
    348,037.40x = 44,573,860,205.00
  5. Step 5: Solve for x
    x = 44,573,860,205.00/348,037.40
  6. Step 6: Final answer
    x = 128,072.04

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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.