Home / 389,018.88-536,848.40-216,947.72

Finding the Fourth Proportional to 389,018.88, 536,848.40 and 216,947.72

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Solution

The fourth proportional to 389,018.88, 536,848.40 and 216,947.72 is: 299,389.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,018.88 : 536,848.40 = 216,947.72 : x
  2. Step 2: Convert to fraction form
    389,018.88/536,848.40 = 216,947.72/x
  3. Step 3: Cross multiply
    389,018.88x = 536,848.40 × 216,947.72
  4. Step 4: Simplify right side
    389,018.88x = 116,468,036,365.65
  5. Step 5: Solve for x
    x = 116,468,036,365.65/389,018.88
  6. Step 6: Final answer
    x = 299,389.16

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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.