Home / 389,916.56-538,084.95-211,068.56

Finding the Fourth Proportional to 389,916.56, 538,084.95 and 211,068.56

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Solution

The fourth proportional to 389,916.56, 538,084.95 and 211,068.56 is: 291,274.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,916.56 : 538,084.95 = 211,068.56 : x
  2. Step 2: Convert to fraction form
    389,916.56/538,084.95 = 211,068.56/x
  3. Step 3: Cross multiply
    389,916.56x = 538,084.95 × 211,068.56
  4. Step 4: Simplify right side
    389,916.56x = 113,572,815,554.17
  5. Step 5: Solve for x
    x = 113,572,815,554.17/389,916.56
  6. Step 6: Final answer
    x = 291,274.67

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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.