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Finding the Fourth Proportional to 144,365.36, 216,548.04 and 70,430

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Solution

The fourth proportional to 144,365.36, 216,548.04 and 70,430 is: 105,645.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,365.36 : 216,548.04 = 70,430 : x
  2. Step 2: Convert to fraction form
    144,365.36/216,548.04 = 70,430/x
  3. Step 3: Cross multiply
    144,365.36x = 216,548.04 × 70,430
  4. Step 4: Simplify right side
    144,365.36x = 15,251,478,457.20
  5. Step 5: Solve for x
    x = 15,251,478,457.20/144,365.36
  6. Step 6: Final answer
    x = 105,645.00

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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.