Finding the Fourth Proportional to 257,803,400.40, 386,138,230.20 and 136,493,134.80
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Solution
The fourth proportional to 257,803,400.40, 386,138,230.20 and 136,493,134.80 is: 204,439,574.59
Step by Step Solution
- Step 1: Write the proportion equation
257,803,400.40 : 386,138,230.20 = 136,493,134.80 : x - Step 2: Convert to fraction form
257,803,400.40/386,138,230.20 = 136,493,134.80/x - Step 3: Cross multiply
257,803,400.40x = 386,138,230.20 × 136,493,134.80 - Step 4: Simplify right side
257,803,400.40x = 52,705,217,506,122,032 - Step 5: Solve for x
x = 52,705,217,506,122,032/257,803,400.40 - Step 6: Final answer
x = 204,439,574.59
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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.