Home / 389,300.76-537,235.47-228,123.72

Finding the Fourth Proportional to 389,300.76, 537,235.47 and 228,123.72

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Solution

The fourth proportional to 389,300.76, 537,235.47 and 228,123.72 is: 314,810.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,300.76 : 537,235.47 = 228,123.72 : x
  2. Step 2: Convert to fraction form
    389,300.76/537,235.47 = 228,123.72/x
  3. Step 3: Cross multiply
    389,300.76x = 537,235.47 × 228,123.72
  4. Step 4: Simplify right side
    389,300.76x = 122,556,153,932.35
  5. Step 5: Solve for x
    x = 122,556,153,932.35/389,300.76
  6. Step 6: Final answer
    x = 314,810.98

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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.