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Finding the Fourth Proportional to 290,068.76, 400,294.50 and 162,756.20

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Solution

The fourth proportional to 290,068.76, 400,294.50 and 162,756.20 is: 224,603.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,068.76 : 400,294.50 = 162,756.20 : x
  2. Step 2: Convert to fraction form
    290,068.76/400,294.50 = 162,756.20/x
  3. Step 3: Cross multiply
    290,068.76x = 400,294.50 × 162,756.20
  4. Step 4: Simplify right side
    290,068.76x = 65,150,411,700.90
  5. Step 5: Solve for x
    x = 65,150,411,700.90/290,068.76
  6. Step 6: Final answer
    x = 224,603.34

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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.