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Finding the Fourth Proportional to 389,773.16, 537,886.66 and 210,925.16

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Solution

The fourth proportional to 389,773.16, 537,886.66 and 210,925.16 is: 291,076.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,773.16 : 537,886.66 = 210,925.16 : x
  2. Step 2: Convert to fraction form
    389,773.16/537,886.66 = 210,925.16/x
  3. Step 3: Cross multiply
    389,773.16x = 537,886.66 × 210,925.16
  4. Step 4: Simplify right side
    389,773.16x = 113,453,829,822.37
  5. Step 5: Solve for x
    x = 113,453,829,822.37/389,773.16
  6. Step 6: Final answer
    x = 291,076.56

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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.