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Finding the Fourth Proportional to 291,703.80, 437,555.70 and 70,087.80

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Solution

The fourth proportional to 291,703.80, 437,555.70 and 70,087.80 is: 105,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,703.80 : 437,555.70 = 70,087.80 : x
  2. Step 2: Convert to fraction form
    291,703.80/437,555.70 = 70,087.80/x
  3. Step 3: Cross multiply
    291,703.80x = 437,555.70 × 70,087.80
  4. Step 4: Simplify right side
    291,703.80x = 30,667,316,390.46
  5. Step 5: Solve for x
    x = 30,667,316,390.46/291,703.80
  6. Step 6: Final answer
    x = 105,131.70

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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.