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Finding the Fourth Proportional to 425,145.17, 586,741.73 and 317,528.34

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Solution

The fourth proportional to 425,145.17, 586,741.73 and 317,528.34 is: 438,220.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,145.17 : 586,741.73 = 317,528.34 : x
  2. Step 2: Convert to fraction form
    425,145.17/586,741.73 = 317,528.34/x
  3. Step 3: Cross multiply
    425,145.17x = 586,741.73 × 317,528.34
  4. Step 4: Simplify right side
    425,145.17x = 186,307,125,947.99
  5. Step 5: Solve for x
    x = 186,307,125,947.99/425,145.17
  6. Step 6: Final answer
    x = 438,220.03

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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.