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Finding the Fourth Proportional to 389,434.60, 584,054.70 and 149,496.40

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Solution

The fourth proportional to 389,434.60, 584,054.70 and 149,496.40 is: 224,207.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,434.60 : 584,054.70 = 149,496.40 : x
  2. Step 2: Convert to fraction form
    389,434.60/584,054.70 = 149,496.40/x
  3. Step 3: Cross multiply
    389,434.60x = 584,054.70 × 149,496.40
  4. Step 4: Simplify right side
    389,434.60x = 87,314,075,053.08
  5. Step 5: Solve for x
    x = 87,314,075,053.08/389,434.60
  6. Step 6: Final answer
    x = 224,207.29

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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.