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Finding the Fourth Proportional to 228,368.90, 320,416.30 and 228,368.90

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Solution

The fourth proportional to 228,368.90, 320,416.30 and 228,368.90 is: 320,416.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,368.90 : 320,416.30 = 228,368.90 : x
  2. Step 2: Convert to fraction form
    228,368.90/320,416.30 = 228,368.90/x
  3. Step 3: Cross multiply
    228,368.90x = 320,416.30 × 228,368.90
  4. Step 4: Simplify right side
    228,368.90x = 73,173,117,973.07
  5. Step 5: Solve for x
    x = 73,173,117,973.07/228,368.90
  6. Step 6: Final answer
    x = 320,416.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.