Home / 312,140,971.74-430,748,904.15-172,911,302.94

Finding the Fourth Proportional to 312,140,971.74, 430,748,904.15 and 172,911,302.94

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Solution

The fourth proportional to 312,140,971.74, 430,748,904.15 and 172,911,302.94 is: 238,614,475.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,140,971.74 : 430,748,904.15 = 172,911,302.94 : x
  2. Step 2: Convert to fraction form
    312,140,971.74/430,748,904.15 = 172,911,302.94/x
  3. Step 3: Cross multiply
    312,140,971.74x = 430,748,904.15 × 172,911,302.94
  4. Step 4: Simplify right side
    312,140,971.74x = 74,481,354,256,553,664
  5. Step 5: Solve for x
    x = 74,481,354,256,553,664/312,140,971.74
  6. Step 6: Final answer
    x = 238,614,475.51

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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.