Home / 389,125.08-536,985.45-219,359.34

Finding the Fourth Proportional to 389,125.08, 536,985.45 and 219,359.34

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Solution

The fourth proportional to 389,125.08, 536,985.45 and 219,359.34 is: 302,711.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,125.08 : 536,985.45 = 219,359.34 : x
  2. Step 2: Convert to fraction form
    389,125.08/536,985.45 = 219,359.34/x
  3. Step 3: Cross multiply
    389,125.08x = 536,985.45 × 219,359.34
  4. Step 4: Simplify right side
    389,125.08x = 117,792,773,901.60
  5. Step 5: Solve for x
    x = 117,792,773,901.60/389,125.08
  6. Step 6: Final answer
    x = 302,711.85

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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.