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Finding the Fourth Proportional to 181,978,545.60, 272,967,818.40 and 52,590,376.80

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Solution

The fourth proportional to 181,978,545.60, 272,967,818.40 and 52,590,376.80 is: 78,885,565.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,978,545.60 : 272,967,818.40 = 52,590,376.80 : x
  2. Step 2: Convert to fraction form
    181,978,545.60/272,967,818.40 = 52,590,376.80/x
  3. Step 3: Cross multiply
    181,978,545.60x = 272,967,818.40 × 52,590,376.80
  4. Step 4: Simplify right side
    181,978,545.60x = 14,355,480,423,929,972
  5. Step 5: Solve for x
    x = 14,355,480,423,929,972/181,978,545.60
  6. Step 6: Final answer
    x = 78,885,565.20

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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.