Home / 389,756.81-537,864.40-220,001.87

Finding the Fourth Proportional to 389,756.81, 537,864.40 and 220,001.87

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Solution

The fourth proportional to 389,756.81, 537,864.40 and 220,001.87 is: 303,602.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,756.81 : 537,864.40 = 220,001.87 : x
  2. Step 2: Convert to fraction form
    389,756.81/537,864.40 = 220,001.87/x
  3. Step 3: Cross multiply
    389,756.81x = 537,864.40 × 220,001.87
  4. Step 4: Simplify right side
    389,756.81x = 118,331,175,426.09
  5. Step 5: Solve for x
    x = 118,331,175,426.09/389,756.81
  6. Step 6: Final answer
    x = 303,602.58

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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.