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Finding the Fourth Proportional to 455,631.40, 683,447.10 and 189,303.40

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Solution

The fourth proportional to 455,631.40, 683,447.10 and 189,303.40 is: 283,955.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,631.40 : 683,447.10 = 189,303.40 : x
  2. Step 2: Convert to fraction form
    455,631.40/683,447.10 = 189,303.40/x
  3. Step 3: Cross multiply
    455,631.40x = 683,447.10 × 189,303.40
  4. Step 4: Simplify right side
    455,631.40x = 129,378,859,750.14
  5. Step 5: Solve for x
    x = 129,378,859,750.14/455,631.40
  6. Step 6: Final answer
    x = 283,955.10

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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.