Home / 387,810.41-535,113.15-215,705.93

Finding the Fourth Proportional to 387,810.41, 535,113.15 and 215,705.93

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Solution

The fourth proportional to 387,810.41, 535,113.15 and 215,705.93 is: 297,637.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,810.41 : 535,113.15 = 215,705.93 : x
  2. Step 2: Convert to fraction form
    387,810.41/535,113.15 = 215,705.93/x
  3. Step 3: Cross multiply
    387,810.41x = 535,113.15 × 215,705.93
  4. Step 4: Simplify right side
    387,810.41x = 115,427,079,675.98
  5. Step 5: Solve for x
    x = 115,427,079,675.98/387,810.41
  6. Step 6: Final answer
    x = 297,637.91

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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.