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Finding the Fourth Proportional to 352,037.48, 485,705.58 and 215,931.56

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Solution

The fourth proportional to 352,037.48, 485,705.58 and 215,931.56 is: 297,920.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,037.48 : 485,705.58 = 215,931.56 : x
  2. Step 2: Convert to fraction form
    352,037.48/485,705.58 = 215,931.56/x
  3. Step 3: Cross multiply
    352,037.48x = 485,705.58 × 215,931.56
  4. Step 4: Simplify right side
    352,037.48x = 104,879,163,590.11
  5. Step 5: Solve for x
    x = 104,879,163,590.11/352,037.48
  6. Step 6: Final answer
    x = 297,920.45

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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.