Finding the Fourth Proportional to 215,873,258.40, 323,697,913.20 and 79,488,439.20
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Solution
The fourth proportional to 215,873,258.40, 323,697,913.20 and 79,488,439.20 is: 119,191,427.80
Step by Step Solution
- Step 1: Write the proportion equation
215,873,258.40 : 323,697,913.20 = 79,488,439.20 : x - Step 2: Convert to fraction form
215,873,258.40/323,697,913.20 = 79,488,439.20/x - Step 3: Cross multiply
215,873,258.40x = 323,697,913.20 × 79,488,439.20 - Step 4: Simplify right side
215,873,258.40x = 25,730,241,892,565,076 - Step 5: Solve for x
x = 25,730,241,892,565,076/215,873,258.40 - Step 6: Final answer
x = 119,191,427.80
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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.