Home / 385,199.13-578,061.15-135,881.13

Finding the Fourth Proportional to 385,199.13, 578,061.15 and 135,881.13

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Solution

The fourth proportional to 385,199.13, 578,061.15 and 135,881.13 is: 203,914.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,199.13 : 578,061.15 = 135,881.13 : x
  2. Step 2: Convert to fraction form
    385,199.13/578,061.15 = 135,881.13/x
  3. Step 3: Cross multiply
    385,199.13x = 578,061.15 × 135,881.13
  4. Step 4: Simplify right side
    385,199.13x = 78,547,602,271.10
  5. Step 5: Solve for x
    x = 78,547,602,271.10/385,199.13
  6. Step 6: Final answer
    x = 203,914.28

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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.