Home / 387,706.08-581,558.40-121,486.98

Finding the Fourth Proportional to 387,706.08, 581,558.40 and 121,486.98

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Solution

The fourth proportional to 387,706.08, 581,558.40 and 121,486.98 is: 182,230.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,706.08 : 581,558.40 = 121,486.98 : x
  2. Step 2: Convert to fraction form
    387,706.08/581,558.40 = 121,486.98/x
  3. Step 3: Cross multiply
    387,706.08x = 581,558.40 × 121,486.98
  4. Step 4: Simplify right side
    387,706.08x = 70,651,773,709.63
  5. Step 5: Solve for x
    x = 70,651,773,709.63/387,706.08
  6. Step 6: Final answer
    x = 182,230.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.