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Finding the Fourth Proportional to 421,501.14, 631,605.33 and 286,393.14

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Solution

The fourth proportional to 421,501.14, 631,605.33 and 286,393.14 is: 429,150.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,501.14 : 631,605.33 = 286,393.14 : x
  2. Step 2: Convert to fraction form
    421,501.14/631,605.33 = 286,393.14/x
  3. Step 3: Cross multiply
    421,501.14x = 631,605.33 × 286,393.14
  4. Step 4: Simplify right side
    421,501.14x = 180,887,433,699.44
  5. Step 5: Solve for x
    x = 180,887,433,699.44/421,501.14
  6. Step 6: Final answer
    x = 429,150.52

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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.