Home / 256,243,400.57-384,430,645.25-74,490,578.57

Finding the Fourth Proportional to 256,243,400.57, 384,430,645.25 and 74,490,578.57

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Solution

The fourth proportional to 256,243,400.57, 384,430,645.25 and 74,490,578.57 is: 111,754,921.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,243,400.57 : 384,430,645.25 = 74,490,578.57 : x
  2. Step 2: Convert to fraction form
    256,243,400.57/384,430,645.25 = 74,490,578.57/x
  3. Step 3: Cross multiply
    256,243,400.57x = 384,430,645.25 × 74,490,578.57
  4. Step 4: Simplify right side
    256,243,400.57x = 28,636,461,184,710,920
  5. Step 5: Solve for x
    x = 28,636,461,184,710,920/256,243,400.57
  6. Step 6: Final answer
    x = 111,754,921.77

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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.