Home / 257,142,678.03-354,861,571.20-145,656,667.47

Finding the Fourth Proportional to 257,142,678.03, 354,861,571.20 and 145,656,667.47

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Solution

The fourth proportional to 257,142,678.03, 354,861,571.20 and 145,656,667.47 is: 201,008,849.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,142,678.03 : 354,861,571.20 = 145,656,667.47 : x
  2. Step 2: Convert to fraction form
    257,142,678.03/354,861,571.20 = 145,656,667.47/x
  3. Step 3: Cross multiply
    257,142,678.03x = 354,861,571.20 × 145,656,667.47
  4. Step 4: Simplify right side
    257,142,678.03x = 51,687,953,874,160,128
  5. Step 5: Solve for x
    x = 51,687,953,874,160,128/257,142,678.03
  6. Step 6: Final answer
    x = 201,008,849.52

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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.