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Finding the Fourth Proportional to 555,547.17, 766,717.31 and 313,845.32

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Solution

The fourth proportional to 555,547.17, 766,717.31 and 313,845.32 is: 433,141.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,547.17 : 766,717.31 = 313,845.32 : x
  2. Step 2: Convert to fraction form
    555,547.17/766,717.31 = 313,845.32/x
  3. Step 3: Cross multiply
    555,547.17x = 766,717.31 × 313,845.32
  4. Step 4: Simplify right side
    555,547.17x = 240,630,636,457.52
  5. Step 5: Solve for x
    x = 240,630,636,457.52/555,547.17
  6. Step 6: Final answer
    x = 433,141.68

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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.