Home / 317,931.70-438,783.89-190,677.30

Finding the Fourth Proportional to 317,931.70, 438,783.89 and 190,677.30

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Solution

The fourth proportional to 317,931.70, 438,783.89 and 190,677.30 is: 263,157.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,931.70 : 438,783.89 = 190,677.30 : x
  2. Step 2: Convert to fraction form
    317,931.70/438,783.89 = 190,677.30/x
  3. Step 3: Cross multiply
    317,931.70x = 438,783.89 × 190,677.30
  4. Step 4: Simplify right side
    317,931.70x = 83,666,127,428.70
  5. Step 5: Solve for x
    x = 83,666,127,428.70/317,931.70
  6. Step 6: Final answer
    x = 263,157.55

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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.