Home / 389,822.68-537,864.06-228,669.40

Finding the Fourth Proportional to 389,822.68, 537,864.06 and 228,669.40

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Solution

The fourth proportional to 389,822.68, 537,864.06 and 228,669.40 is: 315,510.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,822.68 : 537,864.06 = 228,669.40 : x
  2. Step 2: Convert to fraction form
    389,822.68/537,864.06 = 228,669.40/x
  3. Step 3: Cross multiply
    389,822.68x = 537,864.06 × 228,669.40
  4. Step 4: Simplify right side
    389,822.68x = 122,993,051,881.76
  5. Step 5: Solve for x
    x = 122,993,051,881.76/389,822.68
  6. Step 6: Final answer
    x = 315,510.25

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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.