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Finding the Fourth Proportional to 372,308, 513,746.16 and 211,111.52

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Solution

The fourth proportional to 372,308, 513,746.16 and 211,111.52 is: 291,311.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,308 : 513,746.16 = 211,111.52 : x
  2. Step 2: Convert to fraction form
    372,308/513,746.16 = 211,111.52/x
  3. Step 3: Cross multiply
    372,308x = 513,746.16 × 211,111.52
  4. Step 4: Simplify right side
    372,308x = 108,457,732,731.76
  5. Step 5: Solve for x
    x = 108,457,732,731.76/372,308
  6. Step 6: Final answer
    x = 291,311.85

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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.