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Finding the Fourth Proportional to 385,802.60, 578,492.48 and 119,489.18

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Solution

The fourth proportional to 385,802.60, 578,492.48 and 119,489.18 is: 179,168.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,802.60 : 578,492.48 = 119,489.18 : x
  2. Step 2: Convert to fraction form
    385,802.60/578,492.48 = 119,489.18/x
  3. Step 3: Cross multiply
    385,802.60x = 578,492.48 × 119,489.18
  4. Step 4: Simplify right side
    385,802.60x = 69,123,589,477.63
  5. Step 5: Solve for x
    x = 69,123,589,477.63/385,802.60
  6. Step 6: Final answer
    x = 179,168.29

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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.