Home / 355,930.60-533,895.90-145,719.40

Finding the Fourth Proportional to 355,930.60, 533,895.90 and 145,719.40

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Solution

The fourth proportional to 355,930.60, 533,895.90 and 145,719.40 is: 218,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,930.60 : 533,895.90 = 145,719.40 : x
  2. Step 2: Convert to fraction form
    355,930.60/533,895.90 = 145,719.40/x
  3. Step 3: Cross multiply
    355,930.60x = 533,895.90 × 145,719.40
  4. Step 4: Simplify right side
    355,930.60x = 77,798,990,210.46
  5. Step 5: Solve for x
    x = 77,798,990,210.46/355,930.60
  6. Step 6: Final answer
    x = 218,579.10

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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.