Home / 218,455.20-301,312.89-145,821.51

Finding the Fourth Proportional to 218,455.20, 301,312.89 and 145,821.51

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Solution

The fourth proportional to 218,455.20, 301,312.89 and 145,821.51 is: 201,130.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,455.20 : 301,312.89 = 145,821.51 : x
  2. Step 2: Convert to fraction form
    218,455.20/301,312.89 = 145,821.51/x
  3. Step 3: Cross multiply
    218,455.20x = 301,312.89 × 145,821.51
  4. Step 4: Simplify right side
    218,455.20x = 43,937,900,602.26
  5. Step 5: Solve for x
    x = 43,937,900,602.26/218,455.20
  6. Step 6: Final answer
    x = 201,130.03

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1.5x scale

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.