Home / 389,748,502.80-537,852,921.84-213,543,173.88

Finding the Fourth Proportional to 389,748,502.80, 537,852,921.84 and 213,543,173.88

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Solution

The fourth proportional to 389,748,502.80, 537,852,921.84 and 213,543,173.88 is: 294,689,573.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,748,502.80 : 537,852,921.84 = 213,543,173.88 : x
  2. Step 2: Convert to fraction form
    389,748,502.80/537,852,921.84 = 213,543,173.88/x
  3. Step 3: Cross multiply
    389,748,502.80x = 537,852,921.84 × 213,543,173.88
  4. Step 4: Simplify right side
    389,748,502.80x = 114,854,820,010,345,168
  5. Step 5: Solve for x
    x = 114,854,820,010,345,168/389,748,502.80
  6. Step 6: Final answer
    x = 294,689,573.37

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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.