Finding the Fourth Proportional to 257,916,827.60, 386,875,241.40 and 243,136,206.80
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Solution
The fourth proportional to 257,916,827.60, 386,875,241.40 and 243,136,206.80 is: 364,704,310.20
Step by Step Solution
- Step 1: Write the proportion equation
257,916,827.60 : 386,875,241.40 = 243,136,206.80 : x - Step 2: Convert to fraction form
257,916,827.60/386,875,241.40 = 243,136,206.80/x - Step 3: Cross multiply
257,916,827.60x = 386,875,241.40 × 243,136,206.80 - Step 4: Simplify right side
257,916,827.60x = 94,063,378,698,830,320 - Step 5: Solve for x
x = 94,063,378,698,830,320/257,916,827.60 - Step 6: Final answer
x = 364,704,310.20
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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.