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Finding the Fourth Proportional to 528,897.60, 793,540.80 and 213,386.40

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Solution

The fourth proportional to 528,897.60, 793,540.80 and 213,386.40 is: 320,158.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,897.60 : 793,540.80 = 213,386.40 : x
  2. Step 2: Convert to fraction form
    528,897.60/793,540.80 = 213,386.40/x
  3. Step 3: Cross multiply
    528,897.60x = 793,540.80 × 213,386.40
  4. Step 4: Simplify right side
    528,897.60x = 169,330,814,565.12
  5. Step 5: Solve for x
    x = 169,330,814,565.12/528,897.60
  6. Step 6: Final answer
    x = 320,158.03

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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.