Home / 388,915.12-536,683.62-219,160.18

Finding the Fourth Proportional to 388,915.12, 536,683.62 and 219,160.18

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Solution

The fourth proportional to 388,915.12, 536,683.62 and 219,160.18 is: 302,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,915.12 : 536,683.62 = 219,160.18 : x
  2. Step 2: Convert to fraction form
    388,915.12/536,683.62 = 219,160.18/x
  3. Step 3: Cross multiply
    388,915.12x = 536,683.62 × 219,160.18
  4. Step 4: Simplify right side
    388,915.12x = 117,619,678,762.25
  5. Step 5: Solve for x
    x = 117,619,678,762.25/388,915.12
  6. Step 6: Final answer
    x = 302,430.20

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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.