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Finding the Fourth Proportional to 357,604.34, 492,901.20 and 348,138.74

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Solution

The fourth proportional to 357,604.34, 492,901.20 and 348,138.74 is: 479,854.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,604.34 : 492,901.20 = 348,138.74 : x
  2. Step 2: Convert to fraction form
    357,604.34/492,901.20 = 348,138.74/x
  3. Step 3: Cross multiply
    357,604.34x = 492,901.20 × 348,138.74
  4. Step 4: Simplify right side
    357,604.34x = 171,598,003,944.74
  5. Step 5: Solve for x
    x = 171,598,003,944.74/357,604.34
  6. Step 6: Final answer
    x = 479,854.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.