Home / 385,118.12-577,685.07-118,878.81

Finding the Fourth Proportional to 385,118.12, 577,685.07 and 118,878.81

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Solution

The fourth proportional to 385,118.12, 577,685.07 and 118,878.81 is: 178,320.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,118.12 : 577,685.07 = 118,878.81 : x
  2. Step 2: Convert to fraction form
    385,118.12/577,685.07 = 118,878.81/x
  3. Step 3: Cross multiply
    385,118.12x = 577,685.07 × 118,878.81
  4. Step 4: Simplify right side
    385,118.12x = 68,674,513,676.37
  5. Step 5: Solve for x
    x = 68,674,513,676.37/385,118.12
  6. Step 6: Final answer
    x = 178,320.65

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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.