Home / 385,428.90-531,828.42-242,086.84

Finding the Fourth Proportional to 385,428.90, 531,828.42 and 242,086.84

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Solution

The fourth proportional to 385,428.90, 531,828.42 and 242,086.84 is: 334,039.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,428.90 : 531,828.42 = 242,086.84 : x
  2. Step 2: Convert to fraction form
    385,428.90/531,828.42 = 242,086.84/x
  3. Step 3: Cross multiply
    385,428.90x = 531,828.42 × 242,086.84
  4. Step 4: Simplify right side
    385,428.90x = 128,748,661,619.99
  5. Step 5: Solve for x
    x = 128,748,661,619.99/385,428.90
  6. Step 6: Final answer
    x = 334,039.98

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1.5x scale

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.