Home / 314,439.10-434,195.67-304,271.21

Finding the Fourth Proportional to 314,439.10, 434,195.67 and 304,271.21

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Solution

The fourth proportional to 314,439.10, 434,195.67 and 304,271.21 is: 420,155.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,439.10 : 434,195.67 = 304,271.21 : x
  2. Step 2: Convert to fraction form
    314,439.10/434,195.67 = 304,271.21/x
  3. Step 3: Cross multiply
    314,439.10x = 434,195.67 × 304,271.21
  4. Step 4: Simplify right side
    314,439.10x = 132,113,241,887.66
  5. Step 5: Solve for x
    x = 132,113,241,887.66/314,439.10
  6. Step 6: Final answer
    x = 420,155.26

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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.