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Finding the Fourth Proportional to 420,473.58, 630,710.37 and 104,930.49

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Solution

The fourth proportional to 420,473.58, 630,710.37 and 104,930.49 is: 157,395.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,473.58 : 630,710.37 = 104,930.49 : x
  2. Step 2: Convert to fraction form
    420,473.58/630,710.37 = 104,930.49/x
  3. Step 3: Cross multiply
    420,473.58x = 630,710.37 × 104,930.49
  4. Step 4: Simplify right side
    420,473.58x = 66,180,748,172.18
  5. Step 5: Solve for x
    x = 66,180,748,172.18/420,473.58
  6. Step 6: Final answer
    x = 157,395.74

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1.5x scale

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.