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Finding the Fourth Proportional to 545,113.79, 817,606.29 and 145,785.51

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Solution

The fourth proportional to 545,113.79, 817,606.29 and 145,785.51 is: 218,661.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,113.79 : 817,606.29 = 145,785.51 : x
  2. Step 2: Convert to fraction form
    545,113.79/817,606.29 = 145,785.51/x
  3. Step 3: Cross multiply
    545,113.79x = 817,606.29 × 145,785.51
  4. Step 4: Simplify right side
    545,113.79x = 119,195,152,284.22
  5. Step 5: Solve for x
    x = 119,195,152,284.22/545,113.79
  6. Step 6: Final answer
    x = 218,661.05

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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.