Home / 389,721.18-537,816.76-210,873.18

Finding the Fourth Proportional to 389,721.18, 537,816.76 and 210,873.18

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Solution

The fourth proportional to 389,721.18, 537,816.76 and 210,873.18 is: 291,005.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,721.18 : 537,816.76 = 210,873.18 : x
  2. Step 2: Convert to fraction form
    389,721.18/537,816.76 = 210,873.18/x
  3. Step 3: Cross multiply
    389,721.18x = 537,816.76 × 210,873.18
  4. Step 4: Simplify right side
    389,721.18x = 113,411,130,438.50
  5. Step 5: Solve for x
    x = 113,411,130,438.50/389,721.18
  6. Step 6: Final answer
    x = 291,005.82

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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.