Home / 256,243,512.30-384,430,812.93-74,490,690.30

Finding the Fourth Proportional to 256,243,512.30, 384,430,812.93 and 74,490,690.30

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Solution

The fourth proportional to 256,243,512.30, 384,430,812.93 and 74,490,690.30 is: 111,755,089.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,243,512.30 : 384,430,812.93 = 74,490,690.30 : x
  2. Step 2: Convert to fraction form
    256,243,512.30/384,430,812.93 = 74,490,690.30/x
  3. Step 3: Cross multiply
    256,243,512.30x = 384,430,812.93 × 74,490,690.30
  4. Step 4: Simplify right side
    256,243,512.30x = 28,636,516,627,745,864
  5. Step 5: Solve for x
    x = 28,636,516,627,745,864/256,243,512.30
  6. Step 6: Final answer
    x = 111,755,089.41

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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.