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Finding the Fourth Proportional to 270,368.06, 405,670.64 and 128,315.93

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Solution

The fourth proportional to 270,368.06, 405,670.64 and 128,315.93 is: 192,530.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,368.06 : 405,670.64 = 128,315.93 : x
  2. Step 2: Convert to fraction form
    270,368.06/405,670.64 = 128,315.93/x
  3. Step 3: Cross multiply
    270,368.06x = 405,670.64 × 128,315.93
  4. Step 4: Simplify right side
    270,368.06x = 52,054,005,445.30
  5. Step 5: Solve for x
    x = 52,054,005,445.30/270,368.06
  6. Step 6: Final answer
    x = 192,530.16

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1.5x scale

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.