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Finding the Fourth Proportional to 423,021.80, 583,568.88 and 253,223.12

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Solution

The fourth proportional to 423,021.80, 583,568.88 and 253,223.12 is: 349,327.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,021.80 : 583,568.88 = 253,223.12 : x
  2. Step 2: Convert to fraction form
    423,021.80/583,568.88 = 253,223.12/x
  3. Step 3: Cross multiply
    423,021.80x = 583,568.88 × 253,223.12
  4. Step 4: Simplify right side
    423,021.80x = 147,773,132,528.51
  5. Step 5: Solve for x
    x = 147,773,132,528.51/423,021.80
  6. Step 6: Final answer
    x = 349,327.46

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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.