Home / 284,465.13-392,563.26-155,405.40

Finding the Fourth Proportional to 284,465.13, 392,563.26 and 155,405.40

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Solution

The fourth proportional to 284,465.13, 392,563.26 and 155,405.40 is: 214,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,465.13 : 392,563.26 = 155,405.40 : x
  2. Step 2: Convert to fraction form
    284,465.13/392,563.26 = 155,405.40/x
  3. Step 3: Cross multiply
    284,465.13x = 392,563.26 × 155,405.40
  4. Step 4: Simplify right side
    284,465.13x = 61,006,450,445.60
  5. Step 5: Solve for x
    x = 61,006,450,445.60/284,465.13
  6. Step 6: Final answer
    x = 214,460.21

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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.