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Finding the Fourth Proportional to 306,465,357.60, 459,698,036.40 and 203,896,807.20

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Solution

The fourth proportional to 306,465,357.60, 459,698,036.40 and 203,896,807.20 is: 305,845,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,465,357.60 : 459,698,036.40 = 203,896,807.20 : x
  2. Step 2: Convert to fraction form
    306,465,357.60/459,698,036.40 = 203,896,807.20/x
  3. Step 3: Cross multiply
    306,465,357.60x = 459,698,036.40 × 203,896,807.20
  4. Step 4: Simplify right side
    306,465,357.60x = 93,730,961,898,069,376
  5. Step 5: Solve for x
    x = 93,730,961,898,069,376/306,465,357.60
  6. Step 6: Final answer
    x = 305,845,210.80

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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.