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Finding the Fourth Proportional to 375,412.19, 563,113.51 and 91,105.07

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Solution

The fourth proportional to 375,412.19, 563,113.51 and 91,105.07 is: 136,656.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,412.19 : 563,113.51 = 91,105.07 : x
  2. Step 2: Convert to fraction form
    375,412.19/563,113.51 = 91,105.07/x
  3. Step 3: Cross multiply
    375,412.19x = 563,113.51 × 91,105.07
  4. Step 4: Simplify right side
    375,412.19x = 51,302,495,746.50
  5. Step 5: Solve for x
    x = 51,302,495,746.50/375,412.19
  6. Step 6: Final answer
    x = 136,656.45

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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.