Home / 315,615,371.87-435,562,664.36-176,386,129.53

Finding the Fourth Proportional to 315,615,371.87, 435,562,664.36 and 176,386,129.53

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Solution

The fourth proportional to 315,615,371.87, 435,562,664.36 and 176,386,129.53 is: 243,420,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,615,371.87 : 435,562,664.36 = 176,386,129.53 : x
  2. Step 2: Convert to fraction form
    315,615,371.87/435,562,664.36 = 176,386,129.53/x
  3. Step 3: Cross multiply
    315,615,371.87x = 435,562,664.36 × 176,386,129.53
  4. Step 4: Simplify right side
    315,615,371.87x = 76,827,212,533,352,944
  5. Step 5: Solve for x
    x = 76,827,212,533,352,944/315,615,371.87
  6. Step 6: Final answer
    x = 243,420,376.13

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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.